A sense of entitlementis one of the characteristics of antisocial and narcissistic personality disorders and a natural extension of grandiosity; considering oneself superior to others. It can be revealed in the reasons they give to why they have the right to something they want, in their expectations of others to supply what they want, or in their fury when they don’t get what they want.
When deprived of narcissistic supply, narcissists experience symptoms similar to the withdrawal symptoms of a drug addict; becoming delusional, agitated, helpless, and emotionally unhinged. They disintegrate and crumble, and may even experience a psychotic episode. They engage in “magical thinking;” believing that they are omniscient, omnipotent, and that they cannot fail. This makes them fearless and relentless in their pursuit of revenge.